glucose tolerance test


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glu·cose tol·er·ance test (GTT),

a test for diabetes, or for hypoglycemic states such as may be seen, rarely, in patients with insulinomas. Following ingestion of 75-g glucose while the patient is fasting, the blood sugar promptly rises and then falls to normal within 2 hours; in diabetic patients, the increase is greater and the return to normal unusually prolonged; in hypoglycemic patients, depressed glucose levels may be observed in 3-, 4-, or 5-hour measurements.

glucose tolerance test

A standardized test that measures the body's response to an oral–challenge dose of glucose, which is primarily used to confirm the diagnosis of DM, and may be performed in individuals with symptoms–eg ↑ fasting glucose level, hypertriglycerdemia, neuropathy, impotence, glycosuria that are suggestive of DM; in pregnancy GTT is used to diagnose gestational DM

glu·cose tol·er·ance test

(GTT) (glū'kōs tol'ĕr-ăns test)
A test for diabetes, or for hypoglycemic states such as may be seen rarely in patients with insulinomas. Following ingestion of 75 g of glucose while the patient is fasting, the blood sugar promptly rises and then falls to normal within 2 hours; in diabetic patients, the increase is greater and the return to normal unusually prolonged; in hypoglycemic patients, depressed glucose levels may be observed in 3-, 4-, or 5-hour measurements.

glucose tolerance test

A test of the body's response to a dose of glucose after a period of fasting. The blood sugar levels are measured at various intervals after the sugar is taken and the results plotted on a graph. A characteristic shape of the curve occurs in DIABETES because the blood sugar levels rise to an abnormal height and take longer than usual to return to normal. A urine test also shows sugar, in diabetes.

glu·cose tol·er·ance test

(GTT) (glū'kōs tol'ĕr-ăns test)
Assessment for diabetes or for hypoglycemic states. Following ingestion of 75-g glucose while the patient is fasting, blood sugar promptly rises and then falls to normal within 2 hours; in diabetic patients, increase is greater and return to normal unusually prolonged; in hypoglycemic patients, depressed glucose levels may be observed in 3-, 4-, or 5-hour measurements.
References in periodicals archive ?
Comparison between peak values and peak decline of intravenous glucose tolerance test insulin secretion
A similar increase in the insulin levels before the advent of impaired glucose tolerance test and diabetes was also demonstrated in a study by Flynn et al.
The glucose tolerance test with insulin gives you great information about where your body is right now, on the day of the test.
* glucose loads during the glucose tolerance test (75 and 100 g in the ACHOIS and MFMU studies, respectively)
The women underwent several assessments, including an oral fasting glucose tolerance test and dual-energy x-ray absorptiometry (DXA) scan.
Three-hour oral glucose tolerance tests were performed using 75 g of dextrose.
The Clinical Practice Recommendations issued by the American Diabetes Association (ADA) in 2003 (1) state that GDM is diagnosed on the basis of the oral glucose tolerance test (OGTT).
The evidence: Chromium supplements came up empty in all but one of the six good studies that looked at people at risk of diabetes (they were overweight, had a family history, or had abnormal responses to a glucose tolerance test).
To prove that glucose tolerance is altered, we performed an intraperitoneal glucose tolerance test in fasted (12 hr) mice.
Glucose tolerance will be measured by fasting insulin and 2-hour post 75-gram oral glucose tolerance test (OGTT).
On metabolic evaluation, the patient's glucose tolerance test results were flat and her serum insulin levels were elevated.
Ethan Paddock, from the National Institutes of Health in Phoenix, and colleagues assessed the ability of 1h-PG and 2h-PG, derived from a 75-g oral glucose tolerance test (OGTT), to predict DR among an American Indian community in the southwestern United States.

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